Change magik.memento implementation to use durablePlayerMap

[jwulf]

User Story

As a user I can use memento remember things, and get kicked from the server, and reconnect and still have my memories.

Background

At the moment memento is backed by an in-memory object in the JavaScript engine.

Feature Description

Detailed description of the feature, including feature list.

Out of Scope

Great things that can be done in version 2:

Acceptance Criteria

The following need to function to consider this feature complete:

User Acceptance Test Plan

Here is the process for testing this feature:

End-User Documentation

[Docs that can be copypasta to the user docs]

[jwulf]

Now working in magikcraft-core-lore v 1.2.0

[jwulf]

Change to magik.memento: https://github.com/Magikcraft/magikcraft-lore-core/blob/master/src/lore/memento.ts

Change to magik.exmemento: https://github.com/Magikcraft/magikcraft-lore-core/blob/master/src/lore/exmemento.ts